Year: 2025
Type: article
Abstract: Phase transitions induce significant changes in the electrical and photonic properties of materials. Ultra-sensitive photodetectors leveraging material phase transitions can be realized near the transition temperature. Photodetectors based on Ta2NiSe5, a room-temperature excitonic insulator phase transition material, exhibit exceptional performance from visible to terahertz frequencies. Specifically, in the terahertz range, the electronic bandwidth is 360 kHz, and the specific detectivity (D*) reaches 5.3 × 1011 cm·Hz1/2·W−1. The van der Waals heterostructure of Ta2NiSe5/WS2 further enhances performance.
Source: Light Science & Applications
Authors: Yi Wu, Wenjie Deng, Yongzhe Zhang
Institution: Beijing University of Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,190
Awards: G347378468, G7885039407
OpenAlex ID: W4409113660